Rapid geotechnical sample forming device for geological experiment

Abstract

The utility model discloses a geotechnical sample rapid forming device for geological experiments, which comprises a base, a mold bottom plate is fixed at the top of the base, a plurality of concentrically distributed mold rings are detachably mounted at the top of the mold bottom plate, and supports are symmetrically arranged on two sides of the top of the base. A lifting frame is driven between the upper ends of the supports through a linear guide rail, a supporting plate is installed on the lifting frame, a rotating disc is driven by the front end of the supporting plate through a motor, a fixing rod is installed on the rotating disc in a surrounding mode, and the outer end of the fixing rod is connected with a pressing plate. The fixing rod and the pressing plate are connected through a telescopic mechanism composed of a pressing column and a spring, and adjusting limiting mechanisms are arranged on the two sides of the fixing rod. According to the geotechnical sample rapid forming device for the geological experiment, more uniform pressure distribution is achieved, it is ensured that the density in the sample is consistent, meanwhile, the mold assembly with the adjustable size is adopted, and the flexibility and applicability of the device are improved.

Description

Technical Field

[0001] This utility model relates to the field of geological experimental technology, specifically to a rapid prototyping device for geotechnical samples used in geological experiments. Background Technology

[0002] In geological research, laboratory testing of soil samples is a crucial step in assessing soil physical properties. These tests include, but are not limited to, analyses of soil compressibility, permeability, and shear strength. To ensure the accuracy and reproducibility of test results, soil samples with regular shapes and uniform density need to be prepared.

[0003] A major problem with existing technologies is that it is difficult to maintain a consistent pressure distribution during the soil sample preparation process, resulting in uneven density within the sample and affecting the accuracy of subsequent experimental data. In addition, traditional equipment usually uses molds of a single size, which limits the diversity and applicability of samples and has poor adaptability to different experimental needs. When it is necessary to prepare samples of various sizes, researchers have to change different equipment or molds, which increases experimental preparation time and costs. Utility Model Content

[0004] The purpose of this invention is to provide a rapid prototyping device for geotechnical samples used in geological experiments, in order to solve the problems mentioned in the background art, such as the difficulty in maintaining a consistent pressure distribution during soil sample preparation, which leads to uneven density inside the sample, and the limitation of sample diversity and applicability caused by the use of single-size molds in traditional equipment.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid prototyping device for geotechnical samples used in geological experiments, comprising a base, a mold base plate fixed to the top of the base, a plurality of concentrically distributed mold rings detachably mounted on the top of the mold base plate, and symmetrical supports on both sides of the top of the base, a lifting frame driven by a linear guide rail between the upper ends of the supports, a support plate mounted on the lifting frame, a rotating disk driven by a motor at the front end of the support plate, a fixed rod mounted around the rotating disk, a pressure plate connected to the outer end of the fixed rod, and the connection between the fixed rod and the pressure plate being connected by a telescopic mechanism consisting of a pressure column and a spring, and an adjustment limiting mechanism on both sides of the fixed rod.

[0006] Preferably, the rotating disk is surrounded by a plurality of retaining sleeves, and the inner ends of the fixing rods are all inserted into the retaining sleeves and fixed by bolts.

[0007] Preferably, the adjustment and limiting mechanism on both sides of the fixed rod includes welded and fixed screw rings, and an adjusting screw is inserted inside the screw rings through a threaded structure. A limiting block is welded and fixed to the outer end of the adjusting screw, and the inner side of the pressure plate is symmetrically provided with limiting openings that match the structure of the limiting block.

[0008] Preferably, one end of the pressure column extends movably into the interior of the outer end of the fixed rod, the other end of the pressure column is fixedly connected to the connection of the pressure plate, and the spring is sleeved on the outside of the pressure column.

[0009] Preferably, the bottom of each mold ring is provided with annular protrusions, and the top of the mold base plate is provided with several annular grooves that match the annular protrusion structure.

[0010] Preferably, the mold ring and the pressure plate are provided in three sets, and the corresponding structures of each set of the mold ring and the pressure plate match.

[0011] Compared with existing technologies, the beneficial effects of this invention are as follows: This rapid prototyping device for geological experiments achieves a more uniform pressure distribution, ensuring consistent internal density of the sample. Simultaneously, the use of adjustable-size mold components enhances the flexibility and applicability of the equipment, effectively improving the quality and efficiency of sample preparation. Through the design of a mold base plate and multiple concentrically distributed mold rings, the device allows for convenient adjustment of the mold size to meet the needs of preparing samples of different specifications. Furthermore, the telescopic mechanism between the fixed rods and pressure plates mounted around the lifting frame and rotating disk not only precisely controls the magnitude of the pressing force but also automatically adjusts the pressure distribution according to the actual conditions of the sample surface. In addition, the adjustment and limiting mechanisms on both sides of the fixed rods greatly enhance the flexibility and accuracy of operation, making the entire preparation process more efficient and convenient. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a rapid prototyping device for geotechnical samples for geological experiments according to this utility model.

[0013] Figure 2 This is a schematic diagram of the external structure of the support plate of a rapid prototyping device for geotechnical samples for geological experiments according to this utility model.

[0014] Figure 3 This is a top view of the mold base plate of a rapid prototyping device for geotechnical samples used in geological experiments, according to this utility model.

[0015] In the diagram: 1. Base; 2. Mold base plate; 3. Mold ring; 4. Bracket; 5. Lifting frame; 6. Support plate; 7. Rotary disc; 8. Fixing rod; 9. Pressure plate; 10. Sleeve; 11. Threaded ring; 12. Adjusting screw; 13. Limiting block; 14. Pressure column; 15. Spring; 16. Annular protrusion. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3This utility model provides a technical solution: a rapid prototyping device for geotechnical samples used in geological experiments, including a base 1. An anti-slip pad is bonded and fixed to the bottom of the base 1. A mold base plate 2 is fixed to the top of the base 1 by screws. Screw holes are provided around the mold base plate 2. Three concentrically distributed mold rings 3 are detachably installed on the top of the mold base plate 2. The diameters of the three mold rings 3 are all different. Supports 4 are symmetrically arranged on both sides of the top of the base 1. The bottom end of the support 4 is welded to the base 1. A lifting frame 5 is driven by a linear guide rail between the upper ends of the supports 4. The lifting frames 5 are horizontally distributed between the two supports 4. A support plate 6 is installed on the lifting frame 5. A rotating disk 7 is driven by a motor at the front end of the support plate 6. The machine is fixed to the back side of the support plate 6 (not shown in the figure) by bolts, and the output shaft of the motor is fixedly connected to the center of the back side of the rotating disk 7. A fixing rod 8 is installed around the rotating disk 7, and a pressure plate 9 is connected to the outer end of the fixing rod 8. The pressure plate 9 can be covered with an anti-stick sleeve. The connection between the fixing rod 8 and the pressure plate 9 is connected by a telescopic mechanism composed of a pressure column 14 and a spring 15. Adjustment and limiting mechanisms are provided on both sides of the fixing rod 8. The base 1 of this structure provides a stable support foundation. Several concentrically distributed mold rings 3 on the mold base plate 2 can be flexibly adjusted as needed to adapt to the sample preparation requirements of different sizes. The lifting frame 5 can be driven by a linear guide rail to move up and down between two supports 4, so that the lifting frame can be installed... The support plate 6 on the 5th plate can precisely control the height of the rotating disk 7, thereby adjusting the pressure applied by the pressure plate 9 to the soil sample. When the rotating disk 7 is driven to rotate by a motor, it drives multiple fixed rods 8 fixed on it to rotate synchronously. The pressure plate 9 connected to the outer end of each fixed rod 8 rotates accordingly. At the same time, the fixed rods 8 and the pressure plate 9 are connected by a telescopic mechanism consisting of a pressure column 14 and a spring 15, ensuring that the pressure distribution can be automatically adjusted according to the unevenness of the sample surface during the downward pressing of the pressure plate 9, thus ensuring the consistency of the sample's internal density. In addition, the adjustment and limiting mechanisms set on both sides of the fixed rods 8 can further fine-tune the position and pressure of the pressure plate 9, enhancing the flexibility and accuracy of equipment operation. Overall, this device effectively solves the problem of... This design solves the problem of uneven sample density caused by the difficulty in maintaining a consistent pressure distribution in existing technologies. It also overcomes the limitations of traditional equipment, which restricts sample diversity and applicability due to single-size molds. This significantly improves the quality and efficiency of sample preparation, reduces experimental preparation time and costs, and enhances the accuracy and reliability of subsequent experimental data. Several retaining sleeves 10 are welded and fixed around the rotating disk 7, and the inner ends of the fixing rods 8 are inserted into the retaining sleeves 10 and secured with bolts. This structure allows for quick installation and removal of the fixing rods 8 as needed, greatly improving the flexibility and adaptability of the equipment. Furthermore, it ensures that the fixing rods 8 will not shift or loosen during high-speed rotation, guaranteeing operational stability and safety.The adjusting and limiting mechanism on both sides of the fixing rod 8 includes screw rings 11 welded and fixed to both sides of the sleeve 10. An adjusting screw 12 is threaded through the inside of the screw rings 11. A limiting block 13 is welded and fixed to the outer end of the adjusting screw 12. The inner side of the pressure plate 9 is symmetrically provided with limiting openings that match the structure of the limiting block 13. This structure allows the adjusting screw 12 to be adjusted by rotating the screw rings 11. When the adjusting screw 12 rotates, the limiting block 13 can be adjusted to a suitable position according to actual needs. Thus, when the pressure plate 9 is pressed under the action of the fixing rod 8, if it is subjected to pressure from different directions or uneven pressure, the limiting block 13... It interacts with the limiting port on the pressure plate 9 to restrict the movement range of the pressure plate 9, thereby ensuring the stability and consistency of the pressing process. One end of the pressure column 14 extends into the interior of the outer end of the fixing rod 8. The interior of the outer end of the fixing rod 8 is provided with a telescopic hole that matches the end structure of the pressure column 14. The other end of the pressure column 14 is fixedly connected to the connection point of the pressure plate 9, and the spring 15 is sleeved on the outside of the pressure column 14. With this structure, when the pressure plate 9 contacts the sample surface and continues to press down, the pressure column 14 can move slightly in the hole at the outer end of the fixing rod 8, while compressing the spring 15, so that the pressure plate 9 can adjust according to the specific shape of the sample surface. The angle and position of the mold rings are flexibly adjusted to ensure uniform pressure distribution on the sample throughout the pressing process. Furthermore, this mechanism, combined with the adjusting and limiting mechanisms on both sides of the fixing rod 8, further enhances the stability and accuracy of the pressing process. Annular protrusions 16 are welded and fixed to the bottom of each mold ring 3, and the top of the mold base plate 2 has three annular grooves that match the structure of the annular protrusions 16. These annular grooves correspond to the position of each mold ring 3. When performing geotechnical sample pressing operations, the tight fit between the annular protrusions 16 and the annular grooves on the top of the mold base plate 2 effectively prevents the mold rings from... 3. Slippage or displacement under pressure ensures the stability and accuracy of the pressing process. Furthermore, researchers can quickly replace mold rings 3 of different sizes as needed to adapt to diverse experimental requirements, improving the efficiency and quality of the entire preparation process. Both mold rings 3 and pressure plates 9 are provided in three sets, and each set of mold rings 3 and pressure plates 9 has a matching structure. This structure allows the equipment to process multiple geotechnical samples of different sizes or types simultaneously. During operation, each set of mold rings 3 precisely matches its corresponding pressure plate 9, ensuring that each sample receives uniform pressure distribution within its specific mold.

[0018] Working Principle: When using this rapid prototyping device for geotechnical samples in geological experiments, firstly, select a mold ring 3 of appropriate size according to the experimental requirements, and align and embed the annular protrusion 16 at the bottom of the mold ring 3 into the annular groove at the top of the mold base plate 2 to ensure that the mold ring 3 is securely installed. Next, place the soil sample to be pressed into the corresponding mold ring 3. Then, drive the lifting frame 5 to descend to an appropriate height via the linear guide rail on the support 4, and start the motor on the back of the support plate 6 to drive the rotating disk 7 to rotate slowly, causing the multiple fixed rods 8 fixed on it and the pressure plates 9 connected to their outer ends to rotate synchronously, so that the corresponding pressure plate 9 is directly above the mold ring 3. Then, adjust the position of the lifting frame 5 so that the pressure plate 9 gradually approaches the surface of the soil sample. When the pressure plate 9 contacts the sample, continue to press down. During the pressing process, the pressure column 14 will move slightly inside the telescopic hole of the fixed rod 8, while the spring 15 begins to compress, allowing the pressure plate 9 to adaptively adjust according to the specific shape of the sample surface to ensure uniform pressure distribution. At the same time, if further fine-tuning of the position and pressure of the pressure plate 9 is required during the pressing process, the position of the limiting block 13 can be precisely adjusted by rotating the adjusting screw 12 to limit the movement range of the pressure plate 9, ensuring the stability and consistency of the pressing process. After one pressing is completed, the lifting frame 5 is raised to remove the formed sample and prepare for the preparation of the next sample. The entire process can be repeated as needed. The equipment supports the simultaneous processing of three geotechnical samples of different sizes or types, greatly improving work efficiency and sample preparation flexibility, thereby completing a series of tasks.

[0019] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A soil sample rapid forming device for geology experiment, comprising a base (1), characterized in that: The top of the base (1) is fixed with a mold bottom plate (2), the top of the mold bottom plate (2) is detachably installed with several mold rings (3) in concentric distribution, and the both sides of the top of the base (1) are symmetrically provided with supports (4), the upper ends of the supports (4) are driven with lifting frames (5) through linear guide rails, the lifting frames (5) are installed with support plates (6), the front ends of the support plates (6) are driven with rotating discs (7) through motors, the rotating discs (7) are installed with fixed rods (8) around, the outer ends of the fixed rods (8) are connected with pressing plates (9), and the connecting portions of the fixed rods (8) and the pressing plates (9) are connected through telescopic mechanisms composed of pressing columns (14) and springs (15), and the both sides of the fixed rods (8) are provided with adjusting and limiting mechanisms.

2. The soil sample rapid forming device for geological experiments according to claim 1, characterized in that: A plurality of clamping sleeves (10) are arranged around the rotating disc (7), and the inner ends of the fixed rods (8) are inserted into the clamping sleeves (10) and fixed through bolts.

3. The soil sample rapid forming device for geological experiments according to claim 2, characterized in that: The adjusting and limiting mechanisms on the both sides of the fixed rods (8) include screw rings (11) welded on the both sides of the clamping sleeves (10), the inside of the screw ring (11) is inserted with an adjusting screw rod (12) through a threaded structure, the outer end of the adjusting screw rod (12) is welded with a limiting block (13), and the inner side of the pressing plate (9) is symmetrically provided with a limiting opening matching the structure of the limiting block (13).

4. The soil sample rapid forming device for geological experiments according to claim 1, characterized in that: One end of the pressing column (14) movably extends into the inside of the outer end of the fixed rod (8), the other end of the pressing column (14) is fixedly connected with the connecting portion of the pressing plate (9), and the spring (15) is sleeved on the outside of the pressing column (14).

5. The soil sample rapid forming device for geological experiments according to claim 1, characterized in that: The bottom of the mold ring (3) is provided with an annular protrusion (16), and the top of the mold bottom plate (2) is provided with a plurality of annular embedding grooves matching the structure of the annular protrusion (16).

6. The soil sample rapid forming device for geological experiments according to claim 1, characterized in that: The mold ring (3) and the pressing plate (9) are each provided with three groups, and the structure of each group of the mold ring (3) and the pressing plate (9) is matched.

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